Stepping motor handheld instrument

The utility model discloses a hand-held instrument of a stepping motor, which comprises a shell, the shell comprises a top plate, a bottom plate, a side plate and a connecting column, the side plate of the shell is provided with a sensor interface and a bus interface of the stepping motor, and the upper side of the shell is provided with a plurality of control keys; the top plate and the bottom plate are installed at the two ends of the connecting column, inserting grooves are formed in the top plate and the bottom plate respectively, installation bosses are arranged on the upper side and the lower side of the side plate respectively, and the side plate is installed between the top plate and the bottom plate through the installation bosses and the inserting grooves. The bus interface is used for being connected with a stepping motor, connection of the stepping motor is facilitated, and the bus interface can be connected with a plurality of stepping motors. The sensor interface is used for receiving a signal f